book Maths Puzzle Numerical Ability

square x+4=3

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book Other Question

how do you work this problem?

solve the matrix equation for x and y.

[1 14] [y-9 14]
[-5x 10]= [5 10] How would you solve this: (the cube root of 16x to the 5th power)divided by (the cube root of 3x to the 3rd power)?